New JMAG Ver.24.2 Out Now
JMAG-Designer Ver.24.2 was released in September 2025.
JMAG is continuously developed to automate the design process. To this end, Ver.24.2 further enhances its features. In particular, the optimization calculation using surrogate models and the motor temperature evaluation functions have been significantly updated.
This document introduces selected functional enhancements and new features in Ver.24.2.
Offline optimization
JMAG now provides an offline optimization feature. Offline optimization rapidly searches for Pareto optimal solutions by using a pre-generated surrogate model instead of FEA. You can generate the surrogate model from “JMAG Design Explorer”, a database feature that stores numerous design cases. Additionally, the FEA-based discrete value optimization feature now supports material optimization. For example, this enables you to perform a Pareto optimization for the trade-off between performance and cost.
Flow analysis
For motor operating conditions, you can now plot N-T curves and efficiency maps that account for temperature rise during short-time rating condition in addition to continuous rating condition. JMAG has enhanced the thermal circuit feature to perform these evaluations with high precision and to allow you to create models easily. Previously, you had to input the coolant flow rate in the cooling channels as a known value. In V24.2, JMAG introduces “flow analysis”, which allows you to derive the flow rate. This flow rate is referenced by cooling components such as ventilation and cooling Jacket components.
Axial flux motors
JMAG has enhanced the design features for axial flux motors. You can now register user custom geometries in JMAG-Express. JMAG-Express now supports the double-rotor, single-stator type. Additionally, adding cogging torque, torque ripple, induced voltage, and demagnetization to the magnetic design scenarios enables you to perform detailed designs.
Superconductors
You can now set up and perform calculations for superconductors from the GUI. JMAG also now supports magnetic field-thermal direct coupling. This allows you to solve complex phenomena such as a temperature increase lowering the critical current density, leading to local normal conduction that causes a further temperature increase.
To read more, please see the following page!
- Learning How to Use JMAG
Are you interested in JMAG, but don’t know where to start? Want to find out more?
“Learning how to use JMAG” is an introductory guide that will take you through a step-by-step process on how to start and use JMAG for the first time.
